Side bearing



Oct. 25, 1921n A. E. SEVERN SIDE 4BEARING Filed April 30. 1927 INVENTOR@Mon B, M f3 w WITNESSES Patented (ist. 25, 1927.

UNITED. STATES Ars-.Nv orifice.

ARTE-UB] B. SEVEBN, OIE'- IPLTTSBUBGH, I'E'ENNSYLVANA, ASSQNOR 'E0 A..STCK-'L PITTSBURGH, LEENNSYLVANIA.

sinn Bnaarnc.

Application tiled April 30, 1927. Serial No. 157,773.

The invention relates to roller side bearings tor railway cars, and theobject thereo'li is to provide such a bearing with simple and ellectivemeans for moving to its central position a cylinderical roller which issupported by a plane-faced bearing plate.

rlhe invention is illustrated in the accom panying drawings ot whichFig. 1 is a plan view ot a roller bearing; Fig. 2 a side view ot thebearing showing an upper bearing platearranged above it, and shoung somoot its parts in dottedlines in alternate positions; Fig. 3 an end viewof the bearing; and Fig. 4 an end view showing a modilication in detailof construction.

The roller side bearing provided according to this invention comprises acage having a plane-faced bearing plate ttor supporting a roller. Onopposite sides of the roller there ire pivotally mounted lingers whichnormally project into the path along which the roller moves when abolster bearing plate rests upon the roller and a truck swivels or turnswith relation to the bolster to render the roller active. These fingersare turned out oi' their positions when the roller becomes active andmoves in the manner explained. and are counterweighted in such a mannerthat, when the load is removed from the roller, the roller is moved bythe fingers toward its normal central inactive position.

In the illustrative embodiment ot the invention, the roller cage isshown as compris ing a channel having a plane-faced web or bottom l, andside plates or flanges 2. The bottom l ot the cage forms a bearing platefor a roller 3, Which is preferably of truly cylindrical form, and alsopreferably solid throughout rather than being counterweighted. ln Fig.1, and also in full lines in Fig. 2, the roller is indicated as being inits central inactive position. At each side ot the roller there is alinger 4 pivotally mounted in the side plates 2 of the roller cage. Eachlinger is preferably a casting including a counterweight 5 which maybear against the end of the roller cage to normally hold the end of thefinger somewhat below the axis of the roller and in line with its pathof movement. The fingers may be pivotally attached to the cage by rivets6, as shown in Figs. 1, 2 and 3, or, as shown in Fig. 4, the ends ofpivot pins 7 may be welded to the side plates of the roller cage therebyavoiding the necessity of punching these plates close to their upperedges. i

is is well 1Known, roller bearings ofV the type here contemplated areborne by the truclrs of railway cars, a bearing plate 8 being attachedto the bolster of the car and adapted to bear upon a roller when the carbody sways laterally. llVhen a car body thus sways, and its truckswivels with relation to the body, the roller is rendered active androlls upon its lower bearing. As shown in dotted lines in l, roller 3has been thus moved to the right, and in such movement has turned linger4 downwardly raising its counterweight 5. Vifhen upper bearing plate 8no longer rests upon roller 3, the counterweight 5 ot depressed linger 4becomes elicotive to raise the tinger to move the roller towards itscentral position in the roller cage. The inner ends ot' the lingers are,as

shown, preferably spaced from each other a distance greater than thediameter of the roller so that the roller will not be continuouslyengaged by the ngers. Thus the roller has a. limited amount of freedomfor rendering the vibrations of a truck elective to revolve the rolleron its axis and thereby avoid its becoming worn unevenly.

lt is characteristic ot this invention that a cylindrical roller rideson a planetaced bearing plate, and accordingly does not raise thebolster of a car when the truck swivels. Furthermore, by the provisionof the roller centralizing pivoted fingers, the roller may be solidthroughout, thus eliminating the necessity of providing a more eX-pensive and less durable counterweighted roller. However, it will beunderstood that the invention is not limited to the use of a solidcylindrical roller.

According to the provisions ol the patent statutes, l have explained theprinciple and operation of my invention and have illustrated anddescribed' what l now consider to represent its best embodiment.However, l desire to have it understood that., within the scope ot' theappended claims, the invention may be practiced by other forms ofconstruction than that particularly illustrated and described.

I claim as my invention:

1. A roller side bearing for railway cars, comprising a roller cageprovided with a planataced bearing plate, a roller resting Vtowards itsnormal Central upon said plate, and a pair Vof pivotally mounted fingersarranged on opposite sides of said roller and normally projecting intoits active path of movements, said fingers being counterweighted tomovesaid roller position when inactive.

l 2. A rollerside bearing for railway cars,

comprising a cage provided with a plane? faoedbearing plate and Vwithside plates, a roller arranged between said side plates and resting uponsaid bearing plate, and va pair of fingers pivotally mounted in saidside Vplates on opposite sides of said roller and said Hanges andresting upon said web, and a pair of lingers pivotally mounted in saidflanges on opposite sides of said roller `and normally projecting intoits active path of movement, said fingers being Counterweighted to movesaid roller towards its `normal Central position when inactive.

4.' A roller side bearing for railway cars, Comprising a roller CageprovidedY with a` plane-faced bea-ring plate, a roller resting,r uponsaid plate, anda pair oi'I pivotally mounted lingers arranged onopposite sides of said roller and normally projecting into its activepath of movements, each of said lingers being provided with aoounterweight normally bearing against anend of said cage to hold thefinger in the path of movep ment of said roller, the counterweight whenelevated from its normal position being thenV eeotive through the fingerto urge said roller toward its normal Central position. In testimonywhereof, Isign mv name.

ARTHUR' B. SEVERN.

